The MP4 Update fixed all starts and multilap-starts, so the Spawnposition is on the ground, instead of in the air. Well, not all. In Canyon the Tunnel Multilap Block isn't fixed yet. As you can see here, my Car starts in the air in MP4 of the multilap block in the narrow Tunnels of Canyon:

This block, aswell as Stadium Multilap block have bugged pre-start animations if you have no Intro.